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CPT code 66720: Ciliary body destruction, cyclocryotherapy2026 Medicare rate & RVUs in Houston, TX

Report cyclocryotherapy when an ophthalmologist freezes ciliary body tissue to reduce aqueous production, typically to manage glaucoma inadequately controlled by other treatment.

CMS RVU26DEffective Oct 1, 2026One payment locality115 Medicare services in 2024

In Houston, TX, Medicare pays $477.36 for 66720 in the office and $366.25 when it’s performed in a hospital or facility.

$477.36Office (non-facility)
$366.25Hospital or facility
+0.8%vs the national office rate ($473.62)

Check a contract rate as a % of Medicare · 66720 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open 66720 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Houston, TX
  2. What 66720 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 66720 covers

An ophthalmologist uses a cryoprobe applied externally over the ciliary body to freeze targeted tissue and reduce aqueous humor production. This cyclocryotherapy procedure is used most often for glaucoma that remains difficult to control, including situations in which conventional pressure-lowering treatment has not achieved adequate control. It is generally performed as an eye surgery in an operating room or ambulatory surgery setting.

Choose this code for the cryotherapy technique, not for ciliary body treatment performed with diathermy or laser. The operative report should identify the treated eye, the ciliary body cryotherapy performed, and the clinical indication. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. For bilateral treatment reported with modifier 50, CMS pays 150%. Assistant-at-surgery payment is restricted; co-surgeons and team surgery are not permitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

How Houston, TX compares for 66720

Across 109 of 109 payment localities, the office rate for 66720 runs from $424.40 in Arkansas to $620.43 in San Benito County, CA. Houston, TX pays $477.36. The RVUs are the same everywhere; the geographic indexes change the dollars.

66720 in Houston, TX vs other payment areas
  1. Houston, TX · this page$477.36
  2. Austin, TX · Texas$490.31+$12.95
  3. Beaumont, TX · Texas$445.15−$32.21
  4. Brazoria, TX · Texas$469.38−$7.98
  5. Dallas, TX · Texas$472.04−$5.32
  6. Fort Worth, TX · Texas$469.13−$8.23
  7. Galveston, TX · Texas$470.59−$6.77

Other areas in Texas first, then benchmark localities. Bars start at $0.

Every other payment area

66720 in every other Medicare payment locality
Payment localityOfficeFacility
Rest of TexasTexas$456.79$350.60
Los Angeles, CACalifornia$531.92$399.55
Washington, DC areaDistrict of Columbia$537.95$406.14
Miami, FLFlorida$505.09$388.61
Chicago, ILIllinois$492.24$379.79
Manhattan, NYNew York$540.44$410.42
AlaskaAlaska$565.33$446.16
AlabamaAlabama$429.93$332.03

66720 rates by state

Office rate range in each state. Select a state to see its payment localities.

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

$424.40

$565.33

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
66720 office rate range by state
State / territoryOffice rate rangeLocalities
AK$565.331
AL$429.931
AR$424.401
AZ$462.341
CA$499.96–$620.4329
CO$492.401
CT$502.921
DC$537.951
DE$469.471
FL$466.35–$505.093
GA$442.88–$481.482
GU$510.431
HI$510.431
IA$440.111
ID$442.581
IL$453.91–$492.534
IN$444.891
KS$438.061
KY$438.541
LA$437.84–$457.212
MA$489.84–$538.092
MD$477.84–$537.953
ME$444.42–$466.302
MI$448.54–$471.372
MN$473.821
MO$430.99–$458.933
MS$427.781
MT$473.601
NC$448.621
ND$466.281
NE$442.331
NH$484.651
NJ$509.22–$533.272
NM$450.661
NV$471.871
NY$454.62–$552.065
OH$447.051
OK$438.061
OR$468.73–$506.972
PA$447.80–$491.362
PR$476.811
RI$485.351
SC$448.471
SD$465.421
TN$440.001
TX$445.15–$490.318
UT$453.971
VA$464.78–$537.952
VI$476.811
VT$464.451
WA$488.93–$548.702
WI$452.191
WV$438.781
WY$470.411

See 66720 in every payment locality

How the 66720 rate is calculated

Each of 66720’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

How the rate is built · 66720

RVUs × geographic indexes × conversion factor

Office or facility?

Work4.63

4.63 RVUs× 1.000 GPCI

Practice expense9.18

9.18 RVUs× 1.000 GPCI

Malpractice0.37

0.37 RVUs× 1.000 GPCI

Adjusted RVUs

14.1800

Conversion factor

$33.4009

Medicare rate

$473.62

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Houston, TX inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

7,390

Code
66720
Physician work
4.63
Practice expense
9.18
Malpractice
0.37

GPCI2026.csv

102

Locality
Houston, TX
Physician work
1.008
Practice expense
0.993
Malpractice
1.376
Office calculation for 66720 in Houston, TX
ComponentRVULocality factorAdjusted
Physician work4.63× 1.0084.6670
Practice expense9.18× 0.9939.1157
Malpractice0.37× 1.3760.5091
Total RVUs14.2919
Conversion factor× 33.4009

Office rate, Houston, TX$477.36

Office: (4.63 × 1.008 + 9.18 × 0.993 + 0.37 × 1.376) × $33.4009 = $477.36

Facility: (4.63 × 1.008 + 5.83 × 0.993 + 0.37 × 1.376) × $33.4009 = $366.25

Open 66720 in the RVU calculator

Payment rules and modifiers for 66720

66720 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 66720

Ciliary body destruction, cyclocryotherapy

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)1Not paid (statutory restriction).
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.10/0.70/0.20Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 66720

Ciliary body destruction, cyclocryotherapy

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

66720 without 50 · national office

$473.62

Ciliary body destruction, cyclocryotherapy

66720-50 · Bilateral: 150%

$710.43

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

Codes related to 66720

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 66720
CodeHow it relatesOffice range, Houston, TX
Used instead
66700Ciliary body destruction, diathermyCiliary body destruction by diathermy rather than the cryotherapy represented by 66720.$461.02
66710Ciliary body treatment, transscleral laserUses transscleral cyclophotocoagulation instead of cryotherapy.$449.74
66711Endoscopic cyclophotocoagulation, ciliary body destructionUses endoscopic cyclophotocoagulation instead of cryotherapy.No office rate
66740Ciliary body ablation, other operative methodA different ciliary body procedure; distinguish its operative technique from cyclocryotherapy.$448.09

How 66720 has changed in Houston, TX

66720 · Office / nonfacility

$477.36

Effective 2026-10-01

The base rate is $18.29 higher than on 2025-10-01, moving from $459.07 to $477.36 (4.0%).

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release

  1. January 1, 2026

    RVU26A

    $459.07changed to$477.36

    • Conversion factor 32.3465 changed to 33.4009
    • Work RVU 4.75 changed to 4.63
    • Practice expense RVU 8.80 changed to 9.18
    • Malpractice RVU 0.39 changed to 0.37
    • Work GPCI 1.014 changed to 1.008
    • Practice expense GPCI 1.003 changed to 0.993
    • Malpractice GPCI 1.409 changed to 1.376

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2025

    RVU25A

    $474.63changed to$459.07

    • Conversion factor 33.2875 changed to 32.3465
    • Practice expense RVU 8.88 changed to 8.80
    • Malpractice RVU 0.38 changed to 0.39

    Held through RVU25B, RVU25C, RVU25D.

  3. March 9, 2024

    RVU24AR

    $466.89changed to$474.63

    • Conversion factor 32.7442 changed to 33.2875

    Held through RVU24B, RVU24C, RVU24D.

  4. January 1, 2024

    RVU24A

    $478.62changed to$466.89

    • Conversion factor 33.8872 changed to 32.7442
    • Practice expense RVU 8.71 changed to 8.88
    • Malpractice RVU 0.36 changed to 0.38
    • Work GPCI 1.023 changed to 1.014
    • Practice expense GPCI 1.016 changed to 1.003
    • Malpractice GPCI 1.154 changed to 1.409

  5. January 1, 2023

    RVU23A

    $483.13changed to$478.62

    • Conversion factor 34.6062 changed to 33.8872
    • Practice expense RVU 8.48 changed to 8.71
    • Malpractice RVU 0.37 changed to 0.36
    • Work GPCI 1.032 changed to 1.023
    • Practice expense GPCI 1.029 changed to 1.016
    • Malpractice GPCI 0.900 changed to 1.154

    Held through RVU23B, RVU23C, RVU23D.

  6. January 1, 2022

    RVU22A

    $484.67changed to$483.13

    • Conversion factor 34.8931 changed to 34.6062
    • Practice expense RVU 8.42 changed to 8.48
    • Malpractice RVU 0.36 changed to 0.37

    Held through RVU22B, RVU22C, RVU22D.

  7. January 1, 2021

    RVU21A

    $481.60changed to$484.67

    • Conversion factor 36.0896 changed to 34.8931
    • Practice expense RVU 7.99 changed to 8.42
    • Malpractice RVU 0.35 changed to 0.36
    • Work GPCI 1.026 changed to 1.032
    • Practice expense GPCI 1.020 changed to 1.029
    • Malpractice GPCI 0.918 changed to 0.900

    Held through RVU21B, RVU21C, RVU21D.

  8. January 1, 2020

    RVU20A

    $480.38changed to$481.60

    • Conversion factor 36.0391 changed to 36.0896
    • Practice expense RVU 8.06 changed to 7.99
    • Work GPCI 1.020 changed to 1.026
    • Practice expense GPCI 1.012 changed to 1.020
    • Malpractice GPCI 0.936 changed to 0.918

    Held through RVU20B, RVU20C, RVU20D.

  9. January 1, 2019

    RVU19A

    $479.51changed to$480.38

    • Conversion factor 35.9996 changed to 36.0391
    • Malpractice RVU 0.34 changed to 0.35

    Held through RVU19B, RVU19C, RVU19D.

  10. January 1, 2018

    RVU18AR1

    $472.56changed to$479.51

    • Conversion factor 35.8887 changed to 35.9996
    • Practice expense RVU 7.92 changed to 8.06
    • Malpractice RVU 0.35 changed to 0.34
    • Practice expense GPCI 1.009 changed to 1.012
    • Malpractice GPCI 0.946 changed to 0.936

    Held through RVU18B, RVU18C, RVU18D.

  11. January 1, 2017

    RVU17A

    $484.65changed to$472.56

    • Conversion factor 35.8043 changed to 35.8887
    • Work RVU 5.00 changed to 4.75
    • Practice expense RVU 8.03 changed to 7.92
    • Malpractice RVU 0.38 changed to 0.35
    • Work GPCI 1.019 changed to 1.020
    • Practice expense GPCI 1.006 changed to 1.009
    • Malpractice GPCI 0.955 changed to 0.946

    Held through RVU17B, RVU17C, RVU17D.

  12. January 1, 2016

    RVU16A

    $486.80changed to$484.65

    • Conversion factor 35.9335 changed to 35.8043
    • Practice expense RVU 8.06 changed to 8.03
    • Malpractice RVU 0.36 changed to 0.38

    Held through RVU16B, RVU16C, RVU16D.

  13. July 1, 2015

    RVU15C

    $484.37changed to$486.80

    • Conversion factor 35.7547 changed to 35.9335

    Held through RVU15D.

  14. January 1, 2015

    RVU15A

    $488.70changed to$484.37

    • Conversion factor 35.8228 changed to 35.7547
    • Practice expense RVU 7.93 changed to 8.06
    • Malpractice RVU 0.65 changed to 0.36
    • Work GPCI 1.014 changed to 1.019
    • Practice expense GPCI 1.004 changed to 1.006
    • Malpractice GPCI 0.939 changed to 0.955

    Held through RVU15B.

  15. January 1, 2014

    RVU14A

    $491.30changed to$488.70

    • Conversion factor 34.0230 changed to 35.8228
    • Practice expense RVU 8.75 changed to 7.93
    • Malpractice RVU 0.68 changed to 0.65
    • Work GPCI 1.009 changed to 1.014
    • Practice expense GPCI 1.002 changed to 1.004
    • Malpractice GPCI 0.923 changed to 0.939

    Held through RVU14B, RVU14C, RVU14D.

  16. January 1, 2013

    RVU13AR

    Earliest loaded release: $491.30

    Held through RVU13B, RVU13C, RVU13D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$477.36$366.25RVU26D
2026-07-01$477.36$366.25RVU26C
2026-04-01$477.36$366.25RVU26B
2026-01-01$477.36$366.25RVU26A
2025-10-01$459.07$404.57RVU25D
2025-07-01$459.07$404.57RVU25C
2025-04-01$459.07$404.57RVU25B
2025-01-01$459.07$404.57RVU25A
2024-10-01$474.63$416.54RVU24D
2024-07-01$474.63$416.54RVU24C
2024-04-01$474.63$416.54RVU24B
2024-03-09$474.63$416.54RVU24AR
2024-01-01$466.89$409.74RVU24A
2023-10-01$478.62$419.06RVU23D
2023-07-01$478.62$419.06RVU23C
2023-04-01$478.62$419.06RVU23B
2023-01-01$478.62$419.06RVU23A
2022-10-01$483.13$421.17RVU22D
2022-07-01$483.13$421.17RVU22C
2022-04-01$483.13$421.17RVU22B
2022-01-01$483.13$421.17RVU22A
2021-10-01$484.67$422.91RVU21D
2021-07-01$484.67$422.91RVU21C
2021-04-01$484.67$422.91RVU21B
2021-01-01$484.67$422.91RVU21A
2020-10-01$481.60$424.18RVU20D
2020-07-01$481.60$424.18RVU20C
2020-04-01$481.60$424.18RVU20B
2020-01-01$481.60$424.18RVU20A
2019-10-01$480.38$424.58RVU19D
2019-07-01$480.38$424.58RVU19C
2019-04-01$480.38$424.58RVU19B
2019-01-01$480.38$424.58RVU19A
2018-10-01$479.51$425.59RVU18D
2018-07-01$479.51$425.59RVU18C
2018-04-01$479.51$425.59RVU18B
2018-01-01$479.51$425.59RVU18AR1
2017-10-01$472.56$421.14RVU17D
2017-07-01$472.56$421.14RVU17C
2017-04-01$472.56$421.14RVU17B
2017-01-01$472.56$421.14RVU17A
2016-10-01$484.65$433.86RVU16D
2016-07-01$484.65$433.86RVU16C
2016-04-01$484.65$433.86RVU16B
2016-01-01$484.65$433.86RVU16A
2015-10-01$486.80$435.10RVU15D
2015-07-01$486.80$435.10RVU15C
2015-04-01$484.37$432.94RVU15B
2015-01-01$484.37$432.94RVU15A
2014-10-01$488.70$438.70RVU14D
2014-07-01$488.70$438.70RVU14C
2014-04-01$488.70$438.70RVU14B
2014-01-01$488.70$438.70RVU14A
2013-10-01$491.30$438.11RVU13D
2013-07-01$491.30$438.11RVU13C
2013-04-01$491.30$438.11RVU13B
2013-01-01$491.30$438.11RVU13AR

Price 66720 for an earlier date of service

Where the Houston, TX rate applies

Houston, TX is a Medicare payment area, not a city. Our Census mapping connects it to 46 cities and communities in Texas. Some span more than one payment area; confirm with the service ZIP.

Browse all communities in Texas

66720 billing questions

How is 66720 different from transscleral cyclophotocoagulation?

66720 represents ciliary body destruction by freezing with a cryoprobe. Transscleral cyclophotocoagulation uses laser energy and is reported with 66710.

What should the operative note document?

Document the glaucoma indication, the cryotherapy technique, and the eye treated. The record should make clear that ciliary body tissue was treated with cryotherapy rather than diathermy or laser.

Can both eyes be reported on the same date?

For bilateral treatment, report modifier 50; CMS pays the bilateral procedure at 150%. The operative documentation should support treatment of both eyes.

How does the 90-day global period affect postoperative billing?

The day-before preoperative visit and 90 days of related postoperative care are included in the global period.

Can an assistant surgeon or co-surgeon be billed?

CMS does not pay an assistant at surgery for this code. Co-surgeons and team surgery are not permitted.

What happens when another procedure is performed in the same session?

The highest-valued procedure is paid in full, and other procedures are subject to the standard multiple procedure reduction, with payment at 50%.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Show the CMS file lines behind this rate
RVUs for 66720PPRRVU2026_Oct_nonQPP.csv, line 7,390 (RVU26D)
Geographic factors for Houston, TXGPCI2026.csv, line 102 (RVU26D)

Open CMS sourceHow we calculate rates

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